Energy Crossword

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Across
  1. 7. another name for oil
  2. 10. save energy
  3. 11. alchohol mixed with gasoline
  4. 12. oil is mainly used for
  5. 14. heat from the earth's interior
  6. 16. a nuclear reaction in which the nucleus forms up into a heavy nucleus
  7. 18. coal is most used for
  8. 19. an original source for wind and flowing energy
  9. 22. light and heat given off by the sun
  10. 24. fuels are burned, the chemical energy that is released can be used to generate another form of energy
  11. 25. a chemical compound that contain hydro and carbon atoms
  12. 28. A layer of material that traps the air to help block the transfer of heat between the air inside the building
Down
  1. 1. energy-rich substances formed from the remains of organisms
  2. 2. 3 types of fossil fuels
  3. 3. a factory in which crude oil is heated and separated into fuels and other products
  4. 4. fossil fuels made in a long amount of time
  5. 5. 3 types of fossil fuels
  6. 6. energy created by the movement of the air
  7. 8. electricity created by the power of moving water
  8. 9. what source is hydrogen fuel cells
  9. 13. compounds that are made from crude oil
  10. 15. when uranium rods melt and explode
  11. 17. house that uses passive and active heating systems to get electricity and heat
  12. 20. used to start a reaction
  13. 21. wood, plants parts, manure, and food wastes that can be used as fuels
  14. 23. percent of energy used to do work
  15. 26. a substance that provides energy
  16. 27. a nuclear reaction in which the nucleus separates